Printing machine for sensitized material



A g. 15, 1933. IVAN 1,922,461

PRINTING MACHI/NE FOR SENSITIZED MATERIAL Original Filed on. 24, 1930 5 Sheets-Shet 1 amnion Harry [f n es Sullivan,

Aug. 15, 1933. H. H. SULLIVAN PRINTING MACHINE FOR SENSITIZED MATERIAL 3 Sheets-Sheet 2 Original Filed Oct. 24, 1930 Harry Hen es Sullivan,

Aug. 15, 1933. U N 1,922,461

PRINTING MACHINE FOR SENSITIZED MATERIAL Original Filed Oct. 24, 1930 3 Sheets-Sheet 3 i a o 56 a l I v .I @224; non e; i I I x, l l

gwuwntoz Harry Hewes SuZZiVcm A A 45' um Patented Aug. 15, 1933 PRINTING MACHINE FOR, SENSITIZED MATERIAL Harry HcWes Sullivan, Rochester, N. Y.

Original application October 24, 1930, Serial No. 490,911. Divided and this application October 21, 1931. Serial No. 570,226 v 6 Claims. (01. 95- 775) The present invention relates to printing machines for sensitized material, and is a division of an application filed by me on or about October 24., 1930, Serial No. 490,911.

The object of the present invention is to improve that'type of printing machines having an illuminated light transmitting bed against which the sensitized material is held and to equip such machines with a centrifugal exhaust fan located at one end of the light transmitting'bed and adapted to remove the heated air from the bed and blow it from the room, thereby maintaining the machine at proper operating temperature and at the same time assisting in the ventilation of the room.

With these and other objects in View, the invention consists in the construction and novel combination and arrangement of parts herein- 1, natmg means.

afterfully described, illustrated in the accompanying drawings, and set forth in the claims hereto appended, it being understood that various changes in the form, proportion, and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings:

Figure l is a front elevation of a printing machine for sensitized material forming the subject matter of the present invention.

Fig. 2 'is a vertical transverse sectional view through the machine.

Fig. 3 is an end elevation of the upper portion of one end of the machine.

Fig. 4 is a similar view of the other end por 'tion of the machine.

Fig. 5 is a fragmentary View of the end of the machine shown in Fig. 3, with the lamp chamber open.

'Fig. 6 is a fragmentary section showing the lamp chamber closure which forms the air inlet passage.

In the illustrated embodiment of the invention, 1 and 2 indicate the end frames which suprespectively openings 4. and 5 opposite the open ends of the rotary transparent cylinder through which openings 4 and 5 access to the chamber for the illuminating means may be obtained.

Supported within this rotary transparent tubular bed 3 is an illuminating means comprising The end frames 1 and 2 havea plurality of arc lamps 6 arranged in a series 7 extending axially of the bed. These lamps depend from a frame 'lwhichis slidably, mounted on horizontalfguides 8 extending through the bed so that the lamps and their frame may be withdrawn from the bed. The lamps connect by conductors 9 with contacts 10 arranged on an insulating slabll which is supported in an upright position on the frame '7 at one end thereof. These contacts are adapted to be engaged by yielding contacts 12 mounted in a slab 13 which is secured to the inner face of a hinged closure 14 for the opening in the adjacent side frame 1. The contacts 12 are individually yielding, so that proper engagement of any contact 12 with its contact 11 will not be interfered with by any NT orr es:

other'pair of contactsll and 12, The closure 14 is hingedly connected at the bottom .withthe side frame 1 in such manner that an air pas sage 15 is provided atthe bottom of the closure, as clearly illustrated in Fig. 6 of the drawings. This formation of the air inlet opening or passage 15 is preferably effected by means of extending the lugs or fixed elements of the hinge connection as shown in Fig. 9, and centering the bottom portion of the closure 14, which is'in the form of a cap. 'The opposite end of the chamber for the illuminating means may be closed by a closure 16 hinged at 1'7and may carry a motor driven suction fan 18 by which the air is drawn over the surface of the transparent bed and over the illuminating means to cool the bed and maintain the machine at a proper operating temperature. At the same time, 1

the removalof the heated air by the exhaust fan improves the quality of the work and adds to the comfort of the operators by removing the heated air.

The employment of a single belt the width of the cylinder for feeding the sensitized material and the negatives of the material to be copied is not practicable, due to the fact that it tends to build up heat and also interferes with the cooling of the transparent cylinder. more, it is difficult to maintain an even pressure on the cylinder. The heating effect has been eliminated by feeding the material by means of a plurality of independent belts, but here difficulty has been experienced in maintaining on the material being fed. The feeding means cooperateswith the rotary bed in such manner as to turn said bed in the frame during the operation of the feeding means, and embodies a single endless feeding member in the form of a belt or band 19 which is so guided as to provide 'a pluralityof parallel lapstraveling at right angles to the cylindrical bed. This band is guided about the cylinder, as explained in de tail in the aforesaid application, so that the parallel laps 19 pass rearwardly and upwardly from a common roller 20 situated below and iniournaled beneath the table 56, the sheet lead ing over the forward edge of the table and thence over the table to. the cylinder 3 in rear of and then over the cylinder and finally in front of the cylinder. After leaving the cylinder it passes out of the machine and upwardly in front of the same and over the top of themachine to, a washing and developing apparatus (not shown).

The material to be copied is laid on the sheet while it, is over the table, and is carriedby the sheet around the cylinder and passes out of the machine into a receiving tray 7'73.

As the present application is a division of. the aforesaid application, in which the machine is fully described and'illustrated, it is'thought that further description and illustration in the present application is unnecessary and that they illustrations and description of the presentapplication are ample to enable the ventilation and cooling means of the present application to be readily understood. i

What is claimed is:

1.'In a printing machine for sensitizedfmaterial, the combination with a light transmitting cylinder and illuminating means in said cylinder,

of suctionmeans for drawing cool airthrough the cylinder and around the illuminating means.

2. In a printing machine for sensitized material, the combination with a light transmitting cylinder having open ends and illuminating means in said cylinder, of suction means located at one end of the cylinder for drawing cool air through the cylinder and around the illuminating means.

3. In a printing machine for sensitized material, the combination with a light transmitting cylinder having open ends and illuminating means in said:cylinder,of a. movable closure hinged at one end of the cylinder, and a suction fan mounted on said closure to draw cool air through said cylinder and around the illuminating means, said suction fan being carried to and from the cylinder by the swinging movement of the closure. 7

4. Ina printing machine for sensitized material, the combination with a light transmitting cylinder having open ends and illuminating means in said cylinder, of a movable closure hinged at one end of the cylinder, a suction fan mountedon said closure to draw cool air through said cylinder and around the illuminating means, said suction fan being carried to and from the cylinder by the swinging movement of the hinged closure and a movable closure hingedat the other end of the cylinder and providing an air inlet passageieading to the cylinder. 1

5. In a printingmachine for sensitized material, the combination with a light transmitting o. In. a printing machinefor sensitized materiaLthe combination with a light transmitting cylinder having open ends andilluminating means in said'cylinder, of a movable closure hinged at one end of the cylinder, a suctionfan mounted on said closure to draw cool air through the cylinder and around the illuminating means, said suction fan being carried to and from the cylinder' by the swinging movement of the closure, and a movable closure for the other end of the cylinder having a hinge connection'provided with extended lugs spacing the adjacentportion of the last mentioned closure from the cylinder to form an air inlet passage leading to the cylinder.

- HARRY. HEWES SULLIVAN. 

